Oven construction



May 14, 1929. 1 R|KER ET AL 1,712,845

OVEN CONSTRUCTION Filed March 28, 1928 GLAHENCE E. BLE/Gl/ER.

A TTOR/Vi 7.

Patented May 14, 1929.

UNITED STATES fie.

iner PATENT OFFICE.

FREDRICK J. BIKER AND CLARENCE E. BLEICHER, OF DETROIT, MICHIGAN, ASSIGN- ORS TO CHRYSLER CORPORATION, OF DETROIT, MICHIGAN, A CORPORATION OF DELAWARE.

OVEN CONSTRUCTION.

Application filed. March 8, 1 928.

lhis invention relates to an oven construction and more particularly to a closure for the open end thereof.

In ovens particularly adapted for baking the enamel on vehicle bodies the open end thereof is usually provided with a door or is sometimes left open and the bodies on a con tinuously moving conveyor are taken from the oven. A greatamount of heat is wasted in construct-ions where the end of the oven is left open or where a door is used which must necessarily be left open while bodies are being removed. It is therefore an object of this in vention to provide a construction whereby the open end of the oven may be closed while the bodies are being removed from the oven.

Other objects and advantages will more fully appear from the following description taken in connection with the accompanying drawings in which: i

Fig. 1 is a sectional view through an oven showing in a diagrammatic way my improved closure for the open end of the oven.

Fig. 9. is a view corresponding to Fig. 1 in which a body is being removed from the oven with the opening closed.

Fi g. 3 is an end view of Fig. 2.

Fig. l is a fragmentary view showing a means for engaging the closure with one of the conveyors.

Referring to the drawings, we have shown an oven having therein a track 12 which receives a plurality of trucks 1a which are adapted to be continuously forced through the oven. Bodies ill have been shown on the trucks.

Near the open end of the oven, we have provided a closure 18 which consists of a frame worl: supported on wheels 20 adapted to move on a track 22. The frame work comprises side walls 24- which fit closely to the inner wall of the oven and are of sufficient length to extend beyond both ends of a vehicle body on the truck 14-. The ends are open and a slide able curtain 26 is adapted to close one end and the top of the frame work. The track 22 ex tends part way into the oven and beyond the open end thereof so that the closure 18 may be entirely received in the oven or may be drawn outside of the oven. A stop 28 has been shown to block the closure when it is drawn from the oven so that the rear end thereof is not removed.

Serial No. 265,342.

as shown in Fig.1 the curtain 26 is in position to close the forward end and top of the closure and the closure is entirely within the oven eliiclosing on two sides and the forward end the first truck and the body thereon. As the truck is pushed forward the closure is carried with the truck to a position shown in Fig. 2. The curtain may then be raised whereupon it passes rearwardly and down wardly over rollers 27, closing the rear end and top of the closure. The truck in the closure may then be removed tlurough the open end of the closure and the oven remains closed by the curtain at the rear end of the closure between the first and second trucks. the first truck and, body have been removed from the closure the curtain is then drawn down at the forward end of the closure and the closure shoved back into the oven enclosing the next body on two sides, top and for ward end. It will be obvious that the for ward end of the oven will likewise be closed.

As a means for positioning the closure with respect to the body and its truck we have provided a stop mechanism which comprises .1 lever 30 pivoted to one of the side walls as at 32 and having an inwardly projecting ahot- Inent Set which engages a port-ion 36 of the truck 14. The lever 30 has a handle 38 which projects beyond the forward end of the closure and a spring &0 normally holds it in position against anabutment 42 so that the abutment 3st. engages the portion 36. Thus it will be understood that when the closure is shoved in the oven, the stop 34. being in its normal position, it will engage the portion 36 of the truck and limit its movement. The continuous movementof the trucks will cause the ch sure to be carried with the truck and it will be forced out of the oven with the body. T he handle 38 is pressed downwardly to move the abutment 34 out of the path of the portion 36 on the truck thus permitting independent movement: betwen. the truck let and the closure 18.

It will be obvious that various changes m ay be made in the arrangement, combination and construction of the various parts of our inr proved. device without departing from the spirit of our invention, and it is our intention to cover by our claims such changes as may be reasonably included within the scope thereof.

ed for movement into and out of the open end of the oven, rollers at the upper corners of said side walls, and a sl dable cover over said rollers adapted to close the opening between 7 said side Walls at the top and one end thereof.

2. A closure for the open end of an oven.

comprising a pair of spaced side walls adapted for movement into and out of the. open end of the oven, and a curtain having a portion to close'the forwardopen end between said side Walls and a portion to close the rear open end between said side Walls, said portions being arranged to permit the closing'of one end by the opening of theopposite end.

3. A closure for the open end of an oven comprising a pair of spaced side walls connected together, means for closing the opening at the top between said side walls and for alternately closing and opening the space at the ends between said side walls.

4. In a. closure for the open end of an oven comprising in combination, an oven having a top and sidewalls, gi'iiding means within said oven, a plurality of objects to be heated within said oven movable on said guiding means, a pair of connected walls adjacent the side walls of said oven adapted for movement into and out of the open end of said oven, and means'for closing one end of the opening between said Walls, for closing the top opening between said side walls, and for closing the oposite end of the opening between said side walls by the movement of said means to open the first mentioned end opening.

5. In a closure for the open end of an oven comprising in combination, an oven having a top and side Walls, guiding means within said oven,a plurality of objects to be heated within said oven movable on said guiding means, an enclosure for one of the objects adjacent the open end of the oven, movable with'the object, and means for opening one end of the enclosure by closing the opposite end.

6. A closure for the open end of an oven comprising in combination, an oven having a top and side walls, guiding means within said oven, a closure for the open end of said oven having a. pair of side walls adapted for movement into and out of the open end of said oven, and means on one of said last named side walls for engagen'lent with an object movable through said oven on said guiding means.

7. A closure for the open end of an oven comprising in combination, an oven having a top and side walls, guiding means within said oven, a closure for the open end of said oven having a pair of movable side walls and a top covering for the space between said movable walls, means on one of said movable 'alls, for engagement with an object movable through said oven on said guiding means, means for permitting the disenga ement of said last named means, and means tor alternately opening and closing the space between the movable side 'alls at opposite ends thereof.

8. An oven of the class described comprising a pair of spaced side mils and a top therefor, guiding means within said oven adapted to conduct objects to be heated through said oven, a closure for the open end of said oven adapted for movementinto and out of said oven, means carried by said closure for engagement with an object to be heated within said oven, and means for permitting the disengagement of said last named means for removing the object through said closure.

9. An even of the class described compris ing a pair of side walls and a top therefor, a closure for one end thereof adapted for movement into and out of said oven, and means on said closure for pern'iitting the removal of an object to be heated through said closure.

FREDRICK J. BIKER. CLARENCE E. BLEICHER. 

